Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que empresa Simon Stone dirigiu antes de 2011?
 ###Tabelas: CREATE TABLE first_team (first_team_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Pos. VARCHAR, Player VARCHAR, From club VARCHAR, Transfer fee VARCHAR) CREATE TABLE fed_cup_singles_performances_9 (fed_cup_singles_performances_9_id AUTO_INCREMENT PRIMARY KEY, Edition INT, Zone VARCHAR, Round VARCHAR, Date VARCHAR, Against VARCHAR, Surface VARCHAR, Opponent VARCHAR, Outcome VARCHAR, Result VARCHAR) CREATE TABLE theatre_credits (theatre_credits_id AUTO_INCREMENT PRIMARY KEY, Year INT, Production VARCHAR, Role VARCHAR, Director VARCHAR, Company VARCHAR) CREATE TABLE season_1:_2003–2004 (season_1:_2003–2004_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Title VARCHAR, Directed by VARCHAR, Written by VARCHAR, Original air date VARCHAR, Production code INT) CREATE TABLE performances_by_clubs (performances_by_clubs_id AUTO_INCREMENT PRIMARY KEY, # INT, Nation VARCHAR, Winners INT, Runners-up INT, 3rd Place INT, 4th Place INT)  
SELECT Company FROM theatre_credits WHERE Director = simon stone AND Year < 2011